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Consolidated Statements of Operations (Parenthetical) - USD ($)
12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Non-cash stock-based compensation expense $ 943,653 $ 1,352,322 $ 1,531,745
General and Administrative Expense      
Non-cash stock-based compensation expense 943,653 1,352,322 $ 1,531,745
Restructuring Charges      
Non-cash stock-based compensation expense $ 376,365 $ 376,365